A filterable, proliferating factor simulating autoimmunity in malarious and nonmalarious ducklings.
D000740:Anemia / Q000209:etiology*; D000818:Animals; D001327:Autoimmune Diseases / Q000209:etiology*; D004372:Ducks; D004906:Erythrocyte Count; D008289:Malaria, Avian / Q000097:blood / Q000382:microbiology*; D010961:Plasmodium; D014780:Viruses / Q000302:isolation & purification*